Moving Past Failure

I really don't know how to respond to failure.
It seems like the choices are acceptance and moving on or living in defeat from the past.
Of course repentance needs to accompany the acceptance(if sin is involved). I'm wondering what healthy acceptance looks like.

Today my fiance and I made a bad choice and we sinned. We did sexual things outside of marriage. We acted selfishly, and we hurt each-other and ourselves.

In response I was remorseful, and asked for forgiveness. Now I'm done crying about it. My thoughts are: "it happened, it was wrong, let's move on." But now I feel like I'm doing something wrong.

When I think of the scenario that played out, I think it was kind of fun and exciting. I wish I could have more.

What we did was wrong, but fun.
It was hurtful and selfish.

Prayer:
God I pray that you will help me to love my fiance better. I ask you to help me learn from this situation. Help me respond correctly. Help me honor you in all that I do. Help me keep my mind pure. Help me overcome the sexual desires I have fed.